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                                <h1 id="pine-&#x7684;&#x7F16;&#x8BD1;&#x548C;&#x6267;&#x884C;&#x9519;&#x8BEF;">Pine &#x7684;&#x7F16;&#x8BD1;&#x548C;&#x6267;&#x884C;&#x9519;&#x8BEF;</h1>
<hr>
<h2 id="script-requesting-too-many-securities">Script requesting too many securities</h2>
<p>&#x811A;&#x672C;&#x4E2D;&#x7684;&#x6700;&#x5927;&#x4EA4;&#x6613;&#x5BF9;&#x6570;&#x91CF;&#x9650;&#x5236;&#x4E3A; 40 &#x4E2A;&#x3002;&#x5982;&#x679C;&#x4F60;&#x58F0;&#x660E;&#x4E00;&#x4E2A;&#x53D8;&#x91CF;&#x4E3A; security &#x51FD;&#x6570;&#x8C03;&#x7528;&#xFF0C;&#x7136;&#x540E;&#x7528;&#x8FD9;&#x4E2A;&#x53D8;&#x91CF;&#x4F5C;&#x4E3A;&#x5176;&#x4ED6;&#x53D8;&#x91CF;&#x548C;&#x8BA1;&#x7B97;&#x7684;&#x8F93;&#x5165;&#xFF0C;&#x4E0D;&#x4F1A;&#x5BFC;&#x81F4;&#x591A;&#x6B21; security &#x8C03;&#x7528;&#x3002;&#x4F46;&#x662F;&#x5982;&#x679C;&#x4F60;&#x5C06;&#x58F0;&#x660E;&#x4E00;&#x4E2A;&#x8C03;&#x7528; security &#x7684;&#x51FD;&#x6570; -- &#x5BF9;&#x8FD9;&#x4E2A;&#x51FD;&#x6570;&#x7684;&#x6BCF;&#x4E00;&#x6B21;&#x8C03;&#x7528;&#x90FD;&#x5C06;&#x7B97;&#x4F5C;&#x4E00;&#x6B21; security &#x8C03;&#x7528;&#x3002;</p>
<p>&#x770B;&#x4E00;&#x4E0B;&#x6E90;&#x4EE3;&#x7801;&#xFF0C;&#x4E0D;&#x5BB9;&#x6613;&#x8BF4;&#x6709;&#x591A;&#x5C11;&#x4E2A;&#x4EA4;&#x6613;&#x5BF9;&#x4F1A;&#x88AB;&#x8C03;&#x7528;&#x3002;&#x4E0B;&#x9762;&#x7684;&#x4F8B;&#x5B50;&#x5728;&#x7F16;&#x8BD1;&#x540E;&#x6B63;&#x597D;&#x6709; 3 &#x6B21;&#x5BF9; security &#x7684;&#x8C03;&#x7528;&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;Securities count&quot;)
a = security(syminfo.tickerid, &apos;42&apos;, close)  // (1) first unique security call
b = security(syminfo.tickerid, &apos;42&apos;, close)  // same call as above, will not produce new security call after optimizations

plot(a)
plot(a + 2)
plot(b)

sym(p) =&gt;  // no security call on this line
    security(syminfo.tickerid, p, close)
plot(sym(&apos;D&apos;))  // (2) one indirect call to security
plot(sym(&apos;W&apos;))  // (3) another one indirect call to security

security(syminfo.tickerid, timeframe.period, open)  // result of this line is never used, and will be optimized-out
</code></pre><h2 id="script-could-not-be-translated-from-null">Script could not be translated from: null</h2>
<pre><code>study($)
</code></pre><p>&#x901A;&#x5E38;&#x8FD9;&#x79CD;&#x9519;&#x8BEF;&#x53D1;&#x751F;&#x5728;&#x7248;&#x672C; 1 &#x7684; pine &#x811A;&#x672C;&#x4E2D;&#xFF0C;&#x610F;&#x5473;&#x7740;&#x4EE3;&#x7801;&#x662F;&#x4E0D;&#x6B63;&#x786E;&#x7684;&#x3002;&#x7B2C; 2 &#x7248;&#xFF08;&#x53CA;&#x4EE5;&#x4E0A;&#xFF09;&#x7684; Pine &#x5728;&#x89E3;&#x91CA;&#x8FD9;&#x7C7B;&#x9519;&#x8BEF;&#x65B9;&#x9762;&#x505A;&#x5F97;&#x66F4;&#x597D;&#x3002;&#x56E0;&#x6B64;&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x5C1D;&#x8BD5;&#x901A;&#x8FC7;&#x5728;&#x7B2C;&#x4E00;&#x884C;&#x6DFB;&#x52A0;&#x4E00;&#x4E2A;&#x7279;&#x6B8A;&#x5C5E;&#x6027;&#x6765;&#x5207;&#x6362;&#x5230;&#x7248;&#x672C; 2&#x3002;&#x4F60;&#x4F1A;&#x5F97;&#x5230; line 2: no viable alternative at character &apos;$&apos;&#xFF1A;</p>
<pre><code>// @version=2
study($)
</code></pre><h2 id="line-2-no-viable-alternative-at-character-">line 2: no viable alternative at character &#x2018;$&#x2019;</h2>
<p>&#x8FD9;&#x6761;&#x9519;&#x8BEF;&#x4FE1;&#x606F;&#x63D0;&#x793A;&#x4E86;&#x95EE;&#x9898;&#x6240;&#x5728;&#x3002;$ &#x4EE3;&#x66FF;&#x5E26;&#x6709;&#x811A;&#x672C;&#x6807;&#x9898;&#x7684;&#x5B57;&#x7B26;&#x4E32;&#x3002;&#x6BD4;&#x5982;&#xFF1A;</p>
<pre><code>// @version=2
study(&quot;title&quot;)
</code></pre><h2 id="mismatched-input--expecting-">Mismatched input &lt;&#x2026;&gt; expecting &lt;???&gt;</h2>
<p>&#x4E0E; no viable alternative &#x76F8;&#x540C;&#xFF0C;&#x4F46;&#x77E5;&#x9053;&#x90A3;&#x4E2A;&#x5730;&#x65B9;&#x5E94;&#x8BE5;&#x662F;&#x4EC0;&#x4E48;&#x3002;&#x4F8B;&#x5B50;&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;My Script&quot;)
    plot(1)
</code></pre><p>line 3: mismatched input &apos;plot&apos; expecting &apos;end of line without line continuation&apos;</p>
<p>&#x8981;&#x89E3;&#x51B3;&#x6B64;&#x95EE;&#x9898;&#xFF0C;plot &#x5E94;&#x8BE5;&#x5728;&#x6CA1;&#x6709;&#x7F29;&#x8FDB;&#x7684;&#x65B0;&#x884C;&#x4E0A;&#x5F00;&#x59CB;&#x884C;&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;My Script&quot;)
plot(1)
</code></pre><h2 id="loop-is-too-long--200-ms">Loop is too long (&gt; 200 ms)</h2>
<p>&#x6211;&#x4EEC;&#x9650;&#x5236;&#x4E86;&#x6BCF;&#x4E2A;&#x5386;&#x53F2;&#x67F1;&#x548C;&#x5B9E;&#x65F6; tick &#x7684;&#x5FAA;&#x73AF;&#x8BA1;&#x7B97;&#x65F6;&#x95F4;&#xFF0C;&#x4EE5;&#x4FDD;&#x62A4;&#x6211;&#x4EEC;&#x7684;&#x670D;&#x52A1;&#x5668;&#x514D;&#x53D7;&#x65E0;&#x9650;&#x6216;&#x975E;&#x5E38;&#x957F;&#x7684;&#x5FAA;&#x73AF;&#x3002;&#x8FD9;&#x4E2A;&#x9650;&#x5236;&#x4E5F;&#x4F1A;&#x4F7F;&#x90A3;&#x4E9B;&#x9700;&#x8981;&#x592A;&#x957F;&#x65F6;&#x95F4;&#x8BA1;&#x7B97;&#x7684;&#x6307;&#x6807;&#x5931;&#x6548;&#x3002;&#x4F8B;&#x5982;&#xFF0C;&#x5982;&#x679C;&#x4F60;&#x6709; 5000 &#x4E2A;&#x67F1;&#x5B50;&#xFF0C;&#x800C;&#x6307;&#x6807;&#x5728;&#x6BCF;&#x4E2A;&#x67F1;&#x5B50;&#x4E0A;&#x7684;&#x8BA1;&#x7B97;&#x65F6;&#x95F4;&#x4E3A; 200 &#x6BEB;&#x79D2;&#xFF0C;&#x8FD9;&#x5C06;&#x5BFC;&#x81F4;&#x8D85;&#x8FC7; 16 &#x5206;&#x949F;&#x7684;&#x52A0;&#x8F7D;&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;Loop is too long&quot;, max_bars_back=101)
s = 0
for i = 1 to 1e3  // to make it longer
    for j = 0 to 100
        if timestamp(2017, 02, 23, 00, 00) &lt;= time[j] and time[j] &lt; timestamp(2017, 02, 23, 23, 59)
            s := s + 1
plot(s)
</code></pre><p>&#x4E5F;&#x8BB8;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x4F18;&#x5316;&#x7B97;&#x6CD5;&#x6765;&#x514B;&#x670D;&#x8FD9;&#x4E2A;&#x9519;&#x8BEF;&#x3002;&#x5728;&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;&#x7B97;&#x6CD5;&#x53EF;&#x80FD;&#x4F1A;&#x88AB;&#x4F18;&#x5316;&#x6210;&#x8FD9;&#x6837;&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;Loop is too long&quot;, max_bars_back=101)
bar_back_at(t) =&gt;
    i = 0
    step = 51
    for j = 1 to 100
        if i &lt; 0
            i := 0
            break
        if step == 0
            break
        if time[i] &gt;= t
            i := i + step
            i
        else
            i := i - step
            i
        step := step / 2
        step
    i

s = 0
for i = 1 to 1e3  // to make it longer
    s := s - bar_back_at(timestamp(2017, 02, 23, 23, 59)) +
         bar_back_at(timestamp(2017, 02, 23, 00, 00))
    s
plot(s)
</code></pre><h2 id="script-has-too-many-local-variables">Script has too many local variables</h2>
<p>&#x5982;&#x679C;&#x811A;&#x672C;&#x592A;&#x5927;&#xFF0C;&#x65E0;&#x6CD5;&#x7F16;&#x8BD1;&#xFF0C;&#x5C31;&#x4F1A;&#x51FA;&#x73B0;&#x8FD9;&#x4E2A;&#x9519;&#x8BEF;&#x3002;&#x8BED;&#x53E5; var=expression &#x4E3A; var &#x521B;&#x5EFA;&#x4E86;&#x4E00;&#x4E2A;&#x5C40;&#x90E8;&#x53D8;&#x91CF;&#x3002;&#x9664;&#x6B64;&#x4E4B;&#x5916;&#xFF0C;&#x9700;&#x8981;&#x6CE8;&#x610F;&#x7684;&#x662F;&#xFF0C;&#x5728;&#x811A;&#x672C;&#x7F16;&#x8BD1;&#x7684;&#x8FC7;&#x7A0B;&#x4E2D;&#x53EF;&#x4EE5;&#x9690;&#x542B;&#x5730;&#x521B;&#x5EFA;&#x8F85;&#x52A9;&#x53D8;&#x91CF;&#x3002;&#x8FD9;&#x4E2A;&#x9650;&#x5236;&#x540C;&#x65F6;&#x9002;&#x7528;&#x4E8E;&#x663E;&#x5F0F;&#x548C;&#x9690;&#x5F0F;&#x521B;&#x5EFA;&#x7684;&#x53D8;&#x91CF;&#x3002;1000 &#x4E2A;&#x53D8;&#x91CF;&#x7684;&#x9650;&#x5236;&#x662F;&#x9002;&#x7528;&#x4E8E;&#x6BCF;&#x4E2A;&#x51FD;&#x6570;&#x7684;&#x3002;&#x4E8B;&#x5B9E;&#x4E0A;&#xFF0C;&#x653E;&#x7F6E;&#x5728;&#x811A;&#x672C;&#x5168;&#x5C40;&#x8303;&#x56F4;&#x5185;&#x7684;&#x4EE3;&#x7801;&#x4E5F;&#x9690;&#x542B;&#x5728;&#x4E3B;&#x51FD;&#x6570;&#x4E2D;&#xFF0C;1000 &#x4E2A;&#x53D8;&#x91CF;&#x7684;&#x9650;&#x5236;&#x4E5F;&#x9002;&#x7528;&#x4E8E;&#x5B83;&#x3002;&#x4F60;&#x53EF;&#x4EE5;&#x5C1D;&#x8BD5;&#x4E00;&#x4E9B;&#x91CD;&#x6784;&#x65B9;&#x6CD5;&#x6765;&#x907F;&#x514D;&#x8FD9;&#x4E2A;&#x95EE;&#x9898;&#xFF1A;</p>
<pre><code>var1 = expr1
var2 = expr2
var3 = var1 + var2
</code></pre><p>&#x53EF;&#x4EE5;&#x8F6C;&#x6362;&#x4E3A;&#xFF1A;</p>
<pre><code>var3 = expr1 + expr2
</code></pre><h2 id="pine-cannot-determine-the-referencing-length-of-a-series-try-using-maxbarsback-in-the-study-or-strategy-function">Pine cannot determine the referencing length of a series. Try using max_bars_back in the study or strategy function</h2>
<p>&#x8BE5;&#x9519;&#x8BEF;&#x51FA;&#x73B0;&#x5728; Pine &#x9519;&#x8BEF;&#x5730;&#x81EA;&#x52A8;&#x68C0;&#x6D4B;&#x811A;&#x672C;&#x4E2D;&#x6240;&#x4F7F;&#x7528;&#x7684; series &#x7684;&#x6700;&#x5927;&#x957F;&#x5EA6;&#x7684;&#x60C5;&#x51B5;&#x4E0B;&#x3002;&#x8FD9;&#x53D1;&#x751F;&#x5728;&#x811A;&#x672C;&#x7684;&#x6267;&#x884C;&#x6D41;&#x7A0B;&#x4E0D;&#x5141;&#x8BB8; Pine &#x68C0;&#x67E5;&#x6761;&#x4EF6;&#x8BED;&#x53E5;&#xFF08;if&#x3001;iff &#x6216; ?&#xFF09;&#x5206;&#x652F;&#x4E2D; series &#x7684;&#x4F7F;&#x7528;&#xFF0C;Pine &#x4E0D;&#x80FD;&#x81EA;&#x52A8;&#x68C0;&#x6D4B; series &#x88AB;&#x5F15;&#x7528;&#x7684;&#x65F6;&#x95F4;&#x3002;&#x4E0B;&#x9762;&#x662F;&#x4E00;&#x4E2A;&#x9020;&#x6210;&#x8FD9;&#x79CD;&#x95EE;&#x9898;&#x7684;&#x811A;&#x672C;&#x7684;&#x4F8B;&#x5B50;&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;Requires max_bars_back&quot;)
test = 0.0
if bar_index &gt; 1000
    test := roc(close, 20)
plot(test)
</code></pre><p>&#x4E3A;&#x4E86;&#x5E2E;&#x52A9; Pine &#x8FDB;&#x884C;&#x68C0;&#x6D4B;&#xFF0C;&#x4F60;&#x5E94;&#x8BE5;&#x5728;&#x811A;&#x672C;&#x7684;&#x6307;&#x6807;&#x6216;&#x7B56;&#x7565;&#x51FD;&#x6570;&#x4E2D;&#x6DFB;&#x52A0; max_bars_back &#x53C2;&#x6570;&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;Requires max_bars_back&quot;, max_bars_back=20)
test = 0.0
if bar_index &gt; 1000
    test := roc(close, 20)
plot(test)
</code></pre><p>&#x4F60;&#x4E5F;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x628A;&#x6709;&#x95EE;&#x9898;&#x7684;&#x8868;&#x8FBE;&#x5F0F;&#x4ECE;&#x6761;&#x4EF6;&#x5206;&#x652F;&#x4E2D;&#x53D6;&#x51FA;&#x6765;&#x89E3;&#x51B3;&#x8FD9;&#x4E2A;&#x95EE;&#x9898;&#xFF0C;&#x5728;&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#x4E0B;&#xFF0C;&#x4E0D;&#x9700;&#x8981; max_bars_back &#x53C2;&#x6570;&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;My Script&quot;)
test = 0.0
roc20 = roc(close, 20)
if bar_index &gt; 1000
    test := roc20
plot(test)
</code></pre><p>&#x5982;&#x679C;&#x95EE;&#x9898;&#x662F;&#x7531;&#x4E00;&#x4E2A;&#x53D8;&#x91CF;&#x800C;&#x4E0D;&#x662F;&#x4E00;&#x4E2A;&#x5185;&#x7F6E;&#x51FD;&#x6570;&#xFF08;&#x5728;&#x6211;&#x4EEC;&#x7684;&#x4F8B;&#x5B50;&#x4E2D;&#x662F; vwma&#xFF09;&#x5F15;&#x8D77;&#x7684;&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x4F7F;&#x7528; Pine v4 max_bars_back &#x51FD;&#x6570;&#x6765;&#x660E;&#x786E;&#x5B9A;&#x4E49;&#x8BE5;&#x53D8;&#x91CF;&#x7684;&#x5F15;&#x7528;&#x957F;&#x5EA6;&#x3002;&#x8FD9;&#x6837;&#x505A;&#x7684;&#x597D;&#x5904;&#x662F;&#x9700;&#x8981;&#x8F83;&#x5C11;&#x7684;&#x8FD0;&#x884C;&#x65F6;&#x8D44;&#x6E90;&#xFF0C;&#x4F46;&#x9700;&#x8981;&#x4F60;&#x786E;&#x5B9A;&#x6709;&#x95EE;&#x9898;&#x7684;&#x53D8;&#x91CF;&#xFF0C;&#x4F8B;&#x5982;&#xFF0C;&#x5728;&#x4E0B;&#x9762;&#x7684;&#x4F8B;&#x5B50;&#x4E2D;&#x7684;&#x53D8;&#x91CF; s&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;My Script&quot;)
f(off) =&gt;
    t = 0.0
    s = close
    if bar_index &gt; 242
        t := s[off]
    t
plot(f(301))
</code></pre><p>&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#x53EF;&#x4EE5;&#x7528; max_bars_back &#x51FD;&#x6570;&#x6765;&#x89E3;&#x51B3;&#xFF0C;&#x53EA;&#x5B9A;&#x4E49;&#x53D8;&#x91CF; s &#x7684;&#x5F15;&#x7528;&#x957F;&#x5EA6;&#xFF0C;&#x800C;&#x4E0D;&#x662F;&#x6240;&#x6709;&#x811A;&#x672C;&#x7684;&#x53D8;&#x91CF;&#xFF1A;</p>
<pre><code>//@version=4
study(&quot;My Script&quot;)
f(off) =&gt;
    t = 0.0
    s = close
    max_bars_back(s, 301)
    if bar_index &gt; 242
        t := s[off]
    t
plot(f(301))
</code></pre><p>&#x5F53;&#x4F7F;&#x7528;&#x901A;&#x8FC7; bar_index[n] &#x548C; xloc=xloc.bar_index &#x5F15;&#x7528;&#x4EE5;&#x524D;&#x7684;&#x67F1;&#x56FE;&#x65F6;&#xFF0C;&#x4ECE;&#x8FD9;&#x4E2A;&#x67F1;&#x56FE;&#x4E2D;&#x6536;&#x5230;&#x7684; time series &#x5C06;&#x88AB;&#x7528;&#x6765;&#x5728;&#x65F6;&#x95F4;&#x8F74;&#x4E0A;&#x5B9A;&#x4F4D;&#x56FE;&#x7EB8;&#x3002;&#x56E0;&#x6B64;&#xFF0C;&#x5982;&#x679C;&#x65E0;&#x6CD5;&#x786E;&#x5B9A;&#x7F13;&#x51B2;&#x533A;&#x7684;&#x6B63;&#x786E;&#x5927;&#x5C0F;&#xFF0C;&#x5C31;&#x53EF;&#x80FD;&#x53D1;&#x751F;&#x8FD9;&#x79CD;&#x9519;&#x8BEF;&#x3002;&#x4E3A;&#x4E86;&#x907F;&#x514D;&#x8FD9;&#x79CD;&#x60C5;&#x51B5;&#xFF0C;&#x4F60;&#x9700;&#x8981;&#x4F7F;&#x7528; max_bars_bask(time, n)&#x3002;&#x8FD9;&#x79CD;&#x884C;&#x4E3A;&#x5728;&#x5173;&#x4E8E;&#x7ED8;&#x56FE;&#x7684;&#x90E8;&#x5206;&#x6709;&#x66F4;&#x8BE6;&#x7EC6;&#x7684;&#x63CF;&#x8FF0;&#x3002;</p>

                                
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